When I try and adjust the chain of my bike the chain adjustment bolt on the brake side doesn't seem to want to move easily. When i loosen the bolt on the other side i can turn it by hand to go in or out. But the bolt on the brake side is a pain to move, when i turn it it squeals like its dry and i sprayed it with wd-40 but this doesn't help. I think i should replace the bolt but i don't want to break it trying to get it out or damage the internal threads in the swing arm. any one ever run into this or and any ideas on what to do. thanks, Mike.